package com.itheima.controller;

import com.itheima.domain.Permission;
import com.itheima.service.PermissionService;
import com.itheima.service.impl.PermissionServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.List;

public class BaseServlet extends HttpServlet {
    public PermissionService permissionService;

    public void init() throws ServletException {
        permissionService=new PermissionServiceImpl();
    }

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1、获取URI
        String uri = req.getRequestURI();
/*

        if (uri.endsWith("/user/login")){
            req.getRequestDispatcher("/user/login").forward(req,resp);
        }

        List<Permission> permissionList = (List<Permission>) req.getSession().getAttribute("permissionList");

        StringBuffer sb=new StringBuffer();

        for (Permission p : permissionList) {
            sb.append(p.getUrl());
            sb.append(",");
        }

        String s = sb.toString();
*/



        String methodName = uri.substring(uri.lastIndexOf("/") + 1);
        //获取方法对象
        try {
            Method method = this.getClass().getDeclaredMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
            method.setAccessible(true);
            method.invoke(this, req, resp);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
